A metal block measures 10cmx2cmx2cm

1:The pages of a book are numbered 1 to 200 and each leaf is 0.10mm thick.If each cover is 0.20mm thick what is the thickness of the book?2:A metal block measures 10cmx2cmx2cm.What is its volume?How many blocks each 2cmx2cmx2cm have the same total volume?Chemistry questions:Differentiate between evaporation and boilingHow does food in pressure cooker cook faster?